Questions tagged [hdmi]

HDMI stands for High Definition Multimedia Interface. Along with the Composite RCA, HDMI is one of the devices' two video outputs. It provides high quality digital video.

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Can't UNMUTE a streaming tv website

Just loaded vanilla raspian os to a Pi4 8gb linux raspberrypi 5.10.17-v7l+ #1403 SMP Mon Feb 22 11:33:35 GMT 2021 armv7l GNU/Linux CAN watch and hear YOUTUBE videos it's hooked up via the usbC hdmi ...
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22 views

GPIO outputs only work when HDMI monitor is connected to Raspberry Pi

I have a python program set to run on boot of my raspberry pi, and that does work when the monitor is connected. However, I want to disconnect the monitor and just run the program with no HDMI ...
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17 views

S.O.S Monitor Says No signal and HDMI inactive to Raspberry Pi4B

I connected mi PI4B to the monitor with HDMI-MicroHDMI adapter, and when I power de PI device, the monitor says "HDMI Inactive" and no signal. The screen was in black. The Red led of the PI ...
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21 views

Yet another thread about setting hdmi output

The raspi is connected via HDMI to a screen that defaults to 2560x1440. I can see the raspi come up, video output works just fine. However I don't want to run it that hot and prefer 1920x1080 so I can ...
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Dual-Window RPi: HDMI + TFT

Like others, I'd like to set up my RPi (3/B+) with two independent screens: an HDMI and a 3.5" TFT hat (mine happens to be from Adafruit). I can get to the point where the HDMI monitor works ...
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61 views

Raspberry Pi Audio - Can not get 5.1 Surround Sound Audio to output to HDMI

I have an applications where I need to do the following on a Raspberry Pi (3, 4, and/or Zero) running the latest version of Raspberry Pi OS: Play an AC3 file with 5.1 audio over HDMI. Play an MP3 or ...
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9 views

Set HDMI for 7'' display fails on Pi4

Trying to run Waveshare 7'' display on my Pi4. According to Waveshare manual I should set params manually in config.txt: [all] max_usb_current=1 hdmi_group=2 hdmi_mode=87 hdmi_cvt 1024 600 60 6 0 0 0 ...
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27 views

Television is blinking while connecting to Raspberry Pi

I have changed config in the following way: overscan_left=16 overscan_right=16 overscan_top=16 overscan_bottom=16 framebuffer_width=800 framebuffer_height=600 config_hdmi_boost=6 And I am in text ...
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Is it possible to correct the HDMI projection angle for Raspberry Pi?

I'm making a chromium kiosk mode web application running on my Pi sync on 2 screen. One is the 7 inches touch screen. The second is connected to a projector in HDMI and projected on a curved wall (the ...
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30 views

HDMI output does not fill full 800x480 TFT display

I have a Raspberry Pi running Raspberry Pi OS Lite (CLI only). The Pi is attached over HDMI, via an adapter, to a 7.0 inch 800x480 TFT display from Adafruit. When I boot up the CLI, the console only ...
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28 views

Attempting to control a Raspberry Pi running Kodi with a LG RF remote

I'm running a Kodi application within a Raspberry Pi4 connected to an HDMI port on an LG TV with an RF remote. The problem is that I'm not able to control the Kodi application using the LG's RF ...
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How to detect dpi automaticly and set zoom?

I have an Raspberry Pi 4b with Rasbian OS. I want to connect this device to an Full-HD or 4K (Retina) display (not at the same time). This works, but there is no automaticly scaling on 4k like on ...
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26 views

Wakeup HDMI display from standby without interrupting blank screen

I've a HDMI display attached to a RasperryPi 4. After few minutes, first a blank screen is activated, then the display goes into standby. I want to wakeup the display from standby (by a sensor via ...
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I am trying to flip/mirror an hdmi signal and would like to use a Pi to do it

I need to get an hdmi signal to show a mirror image(not duplicate) that i would like to put inline of a video feed. So it would be: SOURCE—>outputCABLE-->PI—->CABLE—>TO MONITOR. Is it a ...
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Pi4: Allow boot with and without HDMI

I need to boot my Pi4 to boot with AND without a HDMI cable plugged in. In order to boot without a monitor connected to the Pi, I've added hdmi_force_hotplug=1 To the config.txt. Now the Pi boots ...
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fbi freezes system and other apps

I'm trying to display an image to HDMI output with fbi. I have a 3.5-inch touchscreen and a video projector as output. fbi works fine but the problem is that fbi freezes the system while shows an ...
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RPi4 jack only works when HDMI connected

I have a RPi4 with an USB microphone (I think it's unrelated to the issue) and jack speakers powered via USB. This set up worked flawlessly in a RPi3B, by the way. (Raspberry Pi OS) The problem is ...
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82 views

usb3 to hdmi on linux - why can my chromebox do it, but my ras pi can't?

i should mention I'm a linux newb. I only use dumb redhat servers at work (barely) but hate windows so much i've got a chromebox and ras pi 4 to try to free myself. and my apps. i've found that ...
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40 views

How to automatically switch between the official 7" DPI display and a HDMI TV on Raspberry Pi 3?

I use a RPi3 with the Recalbox OS for some retrogaming. And I want to use the official 7" DPI monitor when it's portable, and the HDMI when I connect it to the TV. I tried plugging the HDMI cable ...
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(Pi 3B+) RCA works but HDMI crashes after “colored splash screen”

How are you? I recently bought a used raspberry 3 b+ (my first one), at first I couldn´t use the HDMI port because it only gave me the "colored splash screen" and just after that "no ...
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28 views

Use RPi 0w as HDMI/DVI capture device using USB OTG

In a new project, I would like to setup my Raspberry Pi Zero W as a USB display adaptor or display monitor using USB OTG. First to clarify, I do not want to capture video from a camera or game console....
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How to play on RPi4 two Full HD 1080p videos with audio outputting to two HDMIs separately?

Let's consider two mp4 containers media (h264/1080p video + aac audio) mountains.mp4 and forest.mp4. When omxplayer started for first video: $ omxplayer --no-keys --loop --display 2 ./mountains.mp4 ...
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RPi's screen starts doing strange things when running a software

I would like to know if someone could help me with this, when I starts a software like Blender or Sonic Pi my screen begins to freeze and by continuing refreshing the screen I finish with a white ...
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Connecting my Raspberry Pi 0 W

I was wondering which type of HDMI I should use to connect my Raspberry pi to my monitor, it says HDMI on the side but I dont appear to have any cables of the type, I would like to buy the cable but I ...
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Raspberry pi 2B is stuck on rainbow screen and the 7" official screen is white

My Raspberry pi 2B works perfectly fine when it is connected to my TV via HDMI. But when I connect it to the touchscreen at the same time, the touchscreen is just a white screen and on the HDMI, it is ...
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12 views

My scren blinks every 10 seconds (RPI 4)

I have a RPI 4B connected to a SAMSUNG SyncMaster 743NX with a HDMI to VGA adaptor and then a VGA to VGA cable (also the mini HDMI to HDMI adaptor for RPI 4). My screen goes black every 10 seconds and ...
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123 views

How to set HDMI Port 1 to be used by default on Pi4?

During some experiments it looks like my HDMI port 0 broke down. I still can SSH to it. tvservice -M <display on port 0> Does not show any activity on port 0 when I plug the HDMI cable in and ...
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22 views

TV Hat disables HDMI on Raspberry Pi 4

I got a brand new Raspberry Pi 4 and a TV uHat. When the HAT is not attached to the Pi, I get output from HDMI0. When the HAT IS attached, however, I get no output from HDMI0. My TV just says "...
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32 views

HDMI no signal when i run game

Hi I have a raspberry 3 system with recallbox software. the systems works and initiates. when i run a game the HDMI says no signal. this happened when i changed tv. i tried 3 different tvs and 4 ...
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Raspberry Pi 4, audio on hdmi 0, video on hdmi 1

Presently I am trying to setup a Raspberry Pi 4 to send its 7.1 uncompressed audio to an older home theater receiver for decoding via the HDMI 0 output and a 4k video output from the HDMI 1 output to ...
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46 views

Turn HDMI display off while keeping audio on

I am currently wrestling with a configuration headache involving my RPi4, Kodi and an audio receiver (and a TV that doesn't support CEC standby)… Even after installing an HDMI splitter to separate ...
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1answer
35 views

Raspberry PI 0 W

I have embedded Raspbian OS in SD card and I have put it in the Raspberry PI 0 W using Noobs method, But if i connect it to lap or some HDMI display via HDMI cable, I am not getting the display ...
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156 views

Why can't you connect Raspberry Pi to a Laptop via HDMI

I have a Raspberry Pi 3b+. When I hook it up to my TV, which has HDMI input, it automatically boots up the pi and show the raspbian window. Although, when I connect it to my Laptop via HDMI there is ...
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212 views

HDMI streaming on Raspberry Pi 4B with TC358743

I'm looking to stream an HDMI signal wirelessly between two Pis, using a TC358743 on the camera port of the input Pi and playing video from the HDMI port of the output Pi. I'm quite new to Raspberry ...
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76 views

Control IR Port With GPIO

I'm working on a project that needs the ability to control an HDMI switch programmatically. There are going to be a lot of these boxes so price of the components used is very important. I've ...
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218 views

No HDMI audio when logged in as a new user

Sound over HDMI works fine when I login as the default user pi. I created a new user named for example user1 If I login as this user, no sound plays through hdmi. I then added this user to most groups ...
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Alternative ways of controlling TV standby when libCEC is not working

I am running into the problem encountered by a few people here: my LG TVs appear to use an incompatible CEC standard that does not respond to on 0 or standby 0… Like the previous poster, I have ...
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31 views

Raspberry does not respect Framebuffer resolution after latest update (dez 2020) and changes mid-boot

I have the following on my /boot/config.txt: framebuffer_width=1280 framebuffer_height=720 Which worked for many years on my dozens Raspberry Pis until I updated Raspbian 10.6 this week. Now, it ...
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48 views

Headphone deactivates when RasPi is started without screen (HDMI)

To my Rasbian setup I have a set of speakers connected via the headphone jack and it works just fine when I start the RasPi (3b+) with a connected HDMI screen, also when accessing it via a web portal (...
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105 views

no sound via hdmi after update [duplicate]

The sound via hdmi stopped working after this update: Start-Date: 2020-12-04 20:43:36 Commandline: apt upgrade Requested-By: pi (1000) Install: hplip-data:armhf (3.18.12+dfsg0-2, automatic), ...
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370 views

My Raspi4 hdmi won’t sound

What's happening? My raspberry pi4 won’t sound HDMI. (AV jack is working fine) Raspi information environment OS - Raspberry Pi OS with desktop 2020-12(Flash with December 2nd 2020 image and run apt ...
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991 views

Raspberry Pi 4: cannot use 1920×1080 resolution on a Full HD monitor (Asus PA238)

I recently bought a Raspberry Pi 4 (4GB). I installed the latest version of Raspberry Pi OS (2020-08-20-raspios-buster-armhf-full.zip) on it and plugged it on my 1080p TV, and everything worked as ...
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903 views

Default audio output to HDMI

I have an RPi4 installed with ubuntu20.10. I connect it to a display(TV) using an HDMI cable. The problem is the output is by default set to a 3.5mm jack. I override that by running the raspi-config ...
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1answer
44 views

input interrupt error (UV projector)

I am trying to control a UV light projector with a raspberry. The raspberry recognizes the projector, as in the dmesg it says the product, the manufacturer and the serial number... but then this ...
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9 views

Raspbian looses display only displaying cursor when launching emulationstation's games

Question about RetroPI and EmulationStation, or maybe Rasprbian OS? Launching game through NDS emulator 2 out of 3 HDMI devices I use will show black screen with mouse cursor visible right after. My ...
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20 views

Pi keeps changing source

I have a problem with my Pi. Every time I turn on the TV it automatically changes the source to my Pi. I tried following this thread : stopping RaspPi / raspbmc from auto changing source on tv ...
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28 views

Broadcast a message from a background job so that it appears on all sessions including the login screen

I'm running a python program as a background job, started by systemd on boot. From this background job, I would like to print messages to the login screen (the screen that's visible on the HDMI output ...
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1answer
32 views

cec controlling other cec enabled device (not TV) - controlling Fire TV from pi

I have a pi connected to the TV and can successfully power on, power off, and change sources on tv with: echo "on 0" | cec-client -s #turn off echo "standby 0" | cec-client -s #...
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Raspberry Pi3B is new. I am using it as a companion computer for my ROV together with my FC

on my second test while testing the pi with a usb camera, HDMI connected, ethernet cable linked to my laptop and micro USB hooked up for power which is similar to my other ROV setup. On this boot up i ...
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1answer
464 views

Raspberry Pi 400 video issues with older DVI monitors

I have a strange problem trying to get a Raspberry Pi 400 to display on two older monitors, an HP LP2065 and a Samsung SyncMaster 214t. Both are mid-2000s 1600x1200 monitors with DVI inputs. With both,...

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